Bucket.



J. H. HAYWARD & H. S. ATKINSON.

BUCKET,

APPLICATION FILED MAR. 2. m2.

Patented Apr. 25, 1916.

6 SHEETS-SHEET I- QWi meooao 14 8 mm wtozs f M Mm THE COLUMBIAPLANDGRAPH p0,, WASHINGTON, D. c.

J. H. HAYWARD & H. S. ATKINSON.

BUCKET.

APPLICATION FILED MAR. 2. 1912.

' Patented Apr.25, 1916.

6 SHEETS-SHEET 2.

THE COLUMBIA PLANDURAFH 50.. WAsmNu'roN. D. C

1. H. HAYWARD & H. s. ATKINSON.

BUCKET. APPLICATION FILED MAR. 2,1912. g

Patented Apr. 25, 1916.

A r 1f 9 i I If 'm M f jqyq x W W J? giwg Wiiwmao: 2&4 4 1, W 5]VLUALMOZ:

Mam MMM J. H. HAYWARD & H. S. ATKINSON.

BUCKET.

APPLICATION FILED MAR. 2, 1912.

Patented Apr. 25, 1916.

6 SHEETS-SHEET 4.

PH c0.. wAsHlNuTdN, u. c.

J. H. HAYWARD & H. S. ATKINSON.

BUCKET.

- APPLICATION FILED MAR.2,1912.

Patented Apr. 25, 1916.

6 SHEETS-SHEET 5.

THE COLUMBIA PLANOGRAPH c0., WASHINGTON, D. C.

J. H. HAYWARD & H. S. ATKINSON.

- BUCKET.

APPLICATION FILED MAR. 2. m2.

Patented Apr. 25, 1916.

6 SHEETS-SHEET 6.

H5 COLUMBIA PLANOCIRAPH :0, WASHINGTON r) c JOHN H. HAYWARD, OF TEANECK,AND HERBERT S. ATKINSON, OF EAST ORANGE, NEW JERSEY, ASSIGNORS TO THEHAYWARD COMPANY, OF NEW YORK, N. Y., A CORPO RATION OF NEW YORK.

BUCKET.

Specification of Letters Patent.

Patented Apr. 25, 1916.

Application filed March 2, 1912. Serial No. 681,197.

To all whom it may concern Be it known that we, J OHN H. HAYWARD, acitizen of the United States, and residing at Teaneck, in the county ofBergen and State of New Jersey, and HERBERT S. ATKIN- SON, a citizen ofthe United States, and re siding at East Orange, in the county of Essexand State of New Jersey, have invented certain new and usefulImprovements in Buckets, of which the following is a full, clear, andexact specification, such as will enable others skilled in the art towhich it appertains to make and use the same.

This invention relates to hoisting buckets and particularly to thoseknown in the trade as the clam shell bucket.

One ofthe objects of our invention is to provide a sheave-operatedbucket, the upper center of which employs a pivotally mounted head, thecooperating parts of which are so arranged as to give flexibility to thehead, within certain limits, whereby the bucket is better adapted totake different positions upon the material to be excavated than in thecase of buckets otherwise constructed.

A further object of our invention is to provide a sheave-operated bucketof the character stated, which may be operated either in the bights ofthe lines, from a carrier or trolley, in connection with cantaliver orother bridge or tower structures, or at the end of said lines, inconnection with an ordinary boom derrick.

Another object of our invention is to provide simple and reliablemechanism whereby the sheave casing in the lower center is preventedfrom undue turning movement, while offering substantially no frictionalresistance to its perpendicular moven'ients;

A further object of our invention is to provide, in connection with saidbucket, new and improved means for guiding the ropes in the respectivesheave casings.

A further object of our invention is to provide new and improved meansforlimiting the opening movement of the bucket which means also operatestoprevent lateral movement or displacement of the bowl sections.

A further object of our invention is to provide means whereby thedigging power of the bucket may be readily and quickly varied to meetvarying conditions, depend ing upon the quality of material to beexcavated.

A. further object of our invention is to provide a durable bucket, whichis economical to manufacture and which may be read- 1ly assembled andtaken apart, the construction being such that new parts may be easilyand quickly substituted without dismantling the entire structure.

The aforementioned objects, as well as the construction and operation ofthe bucket, will be made clear by the following description inconnection with the accompanying drawings, in which,

Figure 1 is a side elevation; Fig. 2 is an end elevation; Fig. 3 is avertical section on line 3--3 of Fig. 1 with certain parts broken awayand certain other parts removed; Fig. 4 is a-vertical section on line 44of Fig. 3 the most of the parts being shown in elevation; Fig. 5 is aplan view of the lower center of the bucket on line 5-5 of Fig. 2, inthe direction of the arrows, with parts broken away; Fig. 6 is a view ofthe lower part of the upper sheave casing on line 55 of Fig. 2 in adirection opposite to that in dicated by the arrows; Fig. 7 is anenlarged detail; Fig. 8 is an end elevation of the part shown in Fig. 7;Fig. 9 is a plan view on line 99 of Fig. 1; Fig. 10 is an enlargeddetail of one of the rope guides; Fig. 11 is a section on line 1111 ofFig. 10; Fig. 12is a plan detail; Fig. 13 is a horizontal section online 1313 of Fig. 1; Fig. 14: is a vertical section on line 141l of Fig.5, with a part added; Fig. 15 is a plan view of some of the parts shownin Fig. 14; and, Fig. 16 is a side elevation of one of the blade armbearings.

Referring to the construction illustrated, the bucket comprises asupporting head indicated in whole at A, a plurality of bowl sections,each indicated in whole at B, C, which are suspended and supported fromthe head A by a plurality of connecting rods D, E, F, Gr.

The head A is preferably formed as a twopart casting the parts of which,when secured together, as hereinafter described, act not only as meansfor securing the parts of the bucket, at its upper center, together, butalso form a casing for some of the operating heaves of the bucket, Aswill be more clearly seen by a reference to Figs. 1, 2, 3, 4, 7, 8,and9, and with particular rference to the last three figures mentioned,said' head casting comprises the side plates H, H which are respectivelyformed on their inner surfaces with inwardly projecting lugs H H saidlugs acting to space apart the side plates H, H and also as bearingbosses for the reception of bolts for securing the parts together. At apoint midway the vertical length thereof the side plates are offset asindicated at H H and the inner face of each of said side plates "isfurtherprovided with an inwardly extending lug, indicated at- H H havingthe form shown in dotted lines in Fig. 7, which meet to form a ropeguard for the sheaves in said casing, as more clearly indica'tedin Fig.4. They also act as spacers for the side plates and asbearing bosses: toreceive'bolts toassist in holding the side plates firmly together. Otherspacing lugs and rope guards H H, are placed atoppos'ite' ends of eachof the side plates H, H It willbe'observed that the spaced apartrelation-of the side plates H, H provides a housing, in the upper'portion'of the headcasting, for a holding line sheave Hwhich'isrotatably mounted-upon the sheave pin- H and a considerablywider housing, in-the lower portion ofthe casting, for a plurality ofclosing line sheaves indicated (Fig-:3) at H ,'H H, which are rotatably;mounted upon a common sheave pin H The sheave. pins H H pass throughbosses H H and are secured in position against turning movement-bycotter pins H, H. Eaeh'of the side plates H- H has formed thereon, andpreferably integral therewith, alateral hub member indicated at H3 H,which hub members'arehorizontally apertured toreceive headed bolts H Hrespectively, which pass-- through apertures in the upper ends of theconnecting rodsD, E, F, G, the same being-secured in position by thepins H H It willbe seen that the connecting rods are pivotalilymountedattheir upper ends upon' the bolts H H and the hub members I, H,have freedom of rotative movement with said bolts relatively to saidconnecting rods. The vertical position of the sheave casing formed bythe side plates H, H is slightly diagonal to the horizontaldirection ofthe hub members H H, the purpose of which is to provide for a properlead of ropes for the operating sheaves.

The side. plates H, H are provided, at diagonally opposite points, withrope thimbles indicated at H E. It is further to be observed that thepivotal point or axis of the head A' is at a point somewhat above midwaythe length-of the side plates H, H

which being above the center of gravity of said -head permits the sametonormally retaingavertiealyposltion. (when not acted onby the holdingline) even though the bucket generally may occupy a diagonal position onthe material to be excavated.

The bowl members B, C, have rigidly secured thereto at each sidethereof, a side arm I, I, J, J, at the upper ends of each of which arerigidly secured bearing members indicated at K, L, M, N, upon which ispivotally mounted a lower sheave casing indicated in whole at P.

The side arm bearings M, N, are similar in all respects to the side armbearings K, L, and therefore only one set of such bearings will bedescribed. The sidearm bearing K comprises a base member K, which at oneend, indicated at K is rounded OH to conform to the shape of the roundedpivotal end of the side arm I, to which it is rigidly secured.Projecting laterally from the base member K, is a flange member K whichextends annularly to form a hub, which hub at one side thereof'hasformed thereon and preferably integral therewith and likewise integralwith the base member K, a stop K which is provided with a reinforcingtongue K extending tangentially from said hub member. It will be seen byreference to Fig. 12, that the contact face K of said stop is disposeddiagonally to the axis of the bearing K, being inclined downwardly andinwardly toward the base member K, when the bucket is in closedposition. The base member K is also formed at the side opposite thatjust described with a. laterally projecting annular flange K adapted torest within the apertured end of the side arm I. The blade arm bearing Lis identical in construction with that just described, comprising a basemember L, having av rounded end, indicated at L conforming to the shapeof the rounded pivotal end of the side arm I. to which it is rigidlysecured. It has the flange or hub member L the stop L", and thereinforcing tongue L said stop also having the diagonally disposed faceL. It also has the oppositely disposed annular flange L The side armbearing L. when in position upon the blade arm I, being disposedoppositely to that of the bearing K, the diagonal face L thereof isadapted, when the bucket is in open position, to meet flush with thediagonal face K of the hearing K. The diagonal faces K, L of the stopsK, L, of the side arm bearings we regard as important features of ourinvention.

Each of the trays B. C, has pivotally secured thereto a plurality ofside-arm brace members M, N, the inner ends of whichare riveted orotherwise rigidly secured to the side-arms I, I, J J and the outer endsof which are apertured and pivotally connected to the upper edge of thetrays by means of the apertured" ears M forming part of the bracketsMisecured to the inner side of said trays, said brace members and bracketears being pivotally held together by means of the headed holding bolt Mpassing through said apertured parts. Also pivotally mounted upon thebolt M are a plurality of connecting rod braces O, which at their upperends are rigidly secured to the connected rods D, E, F, G. The functionof the side arm braces M, N, and the connecting rod braces O, O, is tokeep the trays in alinement, a result which is also in large measurecontributed to when the bucket is in open position by the diagonal facesof the stops K, L, heretofore described and best illustrated in Fig. 12,wherein it will be seen that the diagonal face K abuts against thediagonal face L, causing a locking of the parts, in this position,against lateral movement of the trays, relative to each other.

In the lower center of the bucket is pivotally mounted a sheave casingindicated in whole at P, which is formed at its middle portion with anopening for the reception of a plurality of sheaves indicated at P, P PP The inner surface of said sheave casing is formed with a plurality ofprojections P P P P extending transversely of said opening, and each ofwhich is formed with a curved face conforming to the curve of theperiphery of the sheaves, whereby the same are adapted to act as ropeguards for said sheaves. About midway the vertical plane of said sheavecasing P, the same is provided, at each side thereof, with horizontallydisposed lateral bosses, Q, approximately semicircular in shape, fromwhich radiate a plurality of ribs Q, Q Q which ribs form seats andabutments for securing thereto weights Q Q, Q, by means of the bolts Q Qwhich weights may be thus added to the sheave casing in case the qualityof material to be excavated varies and requires additional weight in thebucket. These weights also serve the function of adding rope overhaulingpower to lower center of the bucket, for it will be understood that withsuch buckets a considerable length of rope is frequently used, whichrope is very heavy and in its passage from a hoisting drum to the bucketitself, a large amount of frictional resistance results, which must becompensated for and overcome by the heavy sheave casing in the lowercenter of the bucket, which, unless of sufficient weight to accomplishthis, would be unable to effect the opening of the bowl sections.

The sheave casing P, is pivotally secured to the side-arms I, I, J, J,by means of the headed hollow side-arm pins R, R, which are insertedthrough side-arm bearing members K, L, M, N, and into recesses R, in thebosses Q of the casing P. The sheaves P, P P P, are supported upon thesheaves pin R which passes through both of the hollow sidearm pins R andthrough the respective hubs R of said sheaves and are secured againstlongitudinal movement by means of the transverse pins R which areprojected through the bosses Q and through the hollow side-arm pins Rand through the sheave pin R While the sheave pin R is projectedentirely through all of the parts mentioned this is largely forconvenience in withdrawing said pin for the removal, when necessary, ofone or more of the sheaves, without disarranging or dismantling theother operative parts mentioned, and a clearance way is afforded betweensaid sheave pin and the inner walls of the side arm pins B, so that saidhollow side-arm pins do not act as bearings therefor, bearings for saidsheave pin B being provided at that part of the sheave casing directlycontiguous to the sheaves themselves, the bearing points therefor beingindicated more clearly at B in Fig. 3.

All of the sheave pins R H H, are self oiling pins, being grooved as atB to which grooves a lubricant may be admitted from the oil cups R Itwill be understood that the holding line, indicated at R for supportingand raising and lowering the bucket is passed around the upper sheaveindicated at H, and it may be arranged. so that the bucket may operatein the bight or loop of the line, or may be dead ended so that thebucket may operate at the end of said line. Also the closing lineindicated at B", may be dead ended, as indicated in Fig. 3, by securingone end of the same to the head A or other fixed point of the bucket,whereby the opening and closing movement may be effected at the end. ofthe line, or the bucket may be opened and closed in the bight or loop ofthe line. It will be understood that the closing line B, when dead endedat the head A as shown in Fig. 3, passes first around the lower sheaveP, then up and around the upper sheave H thence down around the sheave Pup and around the sheave H thence down and around the sheave P thence upand around the sheave H thence down and around the sheave P and thenceup and thorugh one of the rope thimbles H H When the bucket is intendedto operate in the bight or loop of the line, instead of being dead endedas indicated in Fig. 3, the closing line will pass down through one ofthe thimbles as for example H thence down and around the sheaves as justdescribed and out through the other rope thimble, as at H.

In order to limit the opening movement of thetrays of the bucket, thehinge stops K L are provided. In a bucket thus constructed with. trayoperating sheaves there will necessarily be some turning movement of thelower sheave casing as it is raised and lowered to close and open thebucket unless some provision is made to obviate the same. Other bucketsheretofore constructed have provided means for this purpose, which havebeen more or less satisfactory, but have embodied features which,especially where the bucket was subjected to rough usage, have provedobjectionable, and which itis our purpose to avoid by the means hereinillustrated, and which we will now describe. 1

Rigidly mounted upon the connecting rod cross braces O are a pluralityof bearing pieces S, which are provided with rounded laterallyprojecting bosses S, apertured longitudinally and through which isprojected and rotatably secured in position, a holding bolt S upon whichbolt are pivotally' mounted, one at each end thereof, control rods S S*,which, at their opposite ends are pivotally secured to the lower sheavecasing near its upper portion, and

at a point slightly outside the axial line of said casing.

It might appear from a first glance at the structure shown in Fig. 1,that although the inner ends of the control rods are pivotally connectedto the sheave casing, at points outside the axial line of said casing,it would not permit of the free vertical movement of the sheave casingP. It is tobe borne in mind, however, that the outer ends of the controlarm are not connected to an immovable part of the bucket, but areconnected to the connecting rod braces, the lower ends of which are freeto move outwardly and inwardly, relatively to the sheave casing as thebucket is opened and closed respectively. This feature of connecting thecontrol arms to a member movable relatively to the sheave casing is animportant feature of this part of ourinvention, for this movement makespossible pivotally mounting the control arms upon the sheave casing toretain saidv casing in an approximately horizontal position, while notinterfering in the slightest degree with its perpendicular movement. Thehereinbefore referred to stops K, L, have a direct effect on theoperation of these control arms. Said stops act not only to limit theopening movement of the bowl sections, and thereby the lowering of thesheave casin but also the length of travel of the control arms pivotedto said casing. It will be evident that if such opening movement of thebowl sections were continued beyond the required predetermined point,the continued arcing travel of the pivoted ends of the con trol armswould turn the casing so far on the reverse side of the casing axis tothat illustrated, that on the closing movement of the bowl sections thecasing would turn completely over and jam and prevent the closing of thebucket sections.

The lower sheave casing P is provided with rope guards embodying novelas well this casing two of these rope guards are employed as indicatedat T, T (see Fig. 4-) and as both are identical we will describe butone. It comprises a comb-like casting having the trunk member T fromwhich project the curved guard fingers T. The trunk member T isapertured, likewise the ends of the guard fingers T to receiverespectively the bolts T", T, whereby said guards are secured to thesides of the casing. The bolt T also acts as a removable connector orclosing member for the free ends of the guide arms, and serve, at thatend of the guide, to retain the parts of the rope in their proper placestherein. Similar rope guards T, T are also employed in the lower portionof the upper sheave casing. It will be seen that as both the upper andlower sheave casings are pivotally mounted, and as both are capable oflimited rotary movement, such rope guards have a special utility inconnection therewith, since they are adapted to accommodate the passesor parts of the rope in the different pivotal positions assumed by therespective sheave casings. The peculiar construction of these ropeguards also facilitates their ready removal from the sheave casing, whenworn out, and from the passes or parts of the rope which they guard,since all that is necessary, on such removal, is to remove the bolts ateach end of the guard, whereupon the guards may be lifted away from theropes and casings. This is a feature of importance when it is consideredthat such buckets often require, for their operation, hundreds of feetof rope, and it is therefore much easier to remove the guard from therope than to remove the rope from the guard.

The operation of the bucket will be quite clear from the foregoingdescription, in con nection with the accompanying drawings. It will beunderstood that the bucket is .opened by holding taut the holding lineand loosening the closing line, therebv lowering the lower sheavecasing, permitting it to fall by gravity, when the bowl sections takethe position indicated in dotted lines in Fig. 1, the opposing stopsshown in Figs. 12 and 16 meeting at the end of, and limiting, theopening movement. In this open position of the bowl sections, theholding-line is paid out to drop the bucket onto the material to beexcavated or lifted. In dropping the bucket onto the material, thesurface of which may be very uneven. it often assumes a digging positionout of the perpendicular so that one end of the bucket may beconsiderably higher than the other. In coming to this position, owing tothe pivotal mounting of the head of our bucket, the upper sheave casingis permitted to swing and take a position. in. response to the directionof pull on the holding line diagonal to the normal vertical plane of thebucket but as the point of leverage is below the axis of the head, theclosing line sheaves in said casing, respond immediately when said lineis actuated and tend to take a position in a direct line with the pullof the sheaves in the lower center, during which operation of course theholding-line is eased oft somewhat to permit the bucket to sink into thematerial.

In closing the bucket, the closing line is hauled in and the lowersheave casing raised toward the upper center of the bucket, therebybringing the blades of the bowl sections together, and in this positionboth the holding line and the closing line are actuated to hoist thebucket.

We desire it to be understood that we do not confine ourselves to theprecise details of construction and arrangement of the in vention hereinset forth, as modifications and variations may be made without departingfrom the spirit of the invention, as defined by the appended claims.

What we claim is:

1. In a bucket the combination with a supporting head of a plurality ofbowl sections, a sheave casing to which said sections are pivotallyconnected, connecting rods pivotally connected to the head and to saidbowl sections, sheaves in said casing and means pivotally connected tosaid casing and to another bucket element for retaining the casing in anapproximately horizontal position as said casing is vertically moved toopen and close the bucket.

2. In a bucket the combination with a supporting head of a plurality ofbowl sections, a sheave casing to which said sections are pivotallyconnected, connecting rods pivotally connected to the head and to saidbowl sections, sheaves in said casing and means pivotally connected tosaid casing and pivotally connected to a movable part of said bucket toretain said casing in a substantially horizontal position as it isvertically moved to open and close the bucket.

3. In a bucket, the combination with a supporting head, of a pluralityof bowl sec-.

tions, a sheave casing to which said sections are pivotally connected,connecting rods pivotally connected to the head and to said bowlsections, sheaves in said casing, and a link having operative connectionwith said casing and with an oscillating bucket member to prevent theturning of said casing from an approximately horizontal position as itis vertically moved to open and close the bucket.

4. In a bucket the combination with a supporting head, of a plurality ofbowl sections, a sheave casing to which said sections are pivotallyconnected, connecting rods pivotally connected to the head and to saidbowl sections, sheaves in said casing and means for preventing undueturning movement of said casing as the same is moved vertically to openand close the bucket, said means comprising an oscillating arm connectedto a movable member.

5. In a bucket the combination with a supporting head, of a plurality ofbowl sections, a sheave casing to which said sections are pivotallyconnected, connecting rods pivotally connected to the head and to saidbowl sections, sheaves in said casing, and means for preventing undueturning movement of said casing as the same is moved vertically to openand close the bucket, said means comprising an oscillating arm connectedto said casing and to an oscillating part of the bucket.

6. In a bucket the combination with a supporting head, of a plurality ofbowl sections, a sheave casing to which said sections are pivotallyconnected, connecting rods pivotally connected to the head and to saidbowl sections, sheaves in said casing means for preventing undue turningmovement of said casing as the same is moved vertically to open andclose the bucket, said means comprising a plurality of oscillating arms-pivotally connected to an oscillating part of the bucket and meansacting to limit the opening movement of the bowl sections and thelowering travel of said arms.

7. In a bucket the combination with a supporting head, of a plurality ofbowl sections, side-arms connected to the bowl sections, a sheave casingpivotally connected to said side-arms and means for limiting the openingmovement of the bucket, comprising a plurality of bearing members onsaid side arms, a plurality of hinge stops on said bearing members, saidstops being provided with contact faces diagonally oppositely disposedrelative to the axis of said sheave casing, to prevent lateral motion ofthe bowl sections.

8. In a bucket the combination of a bucket head, a plurality of bowlsections pivotally suspended from the bucket head, side arms on saidbowl sections, a sheave casing pivotally secured to said side arms. saidcasing having longitudinally extending recesses therein, a plurality ofhollow side-arm pins projecting through said side arms and into saidrecesses, aplurality of sheaves in said casing, and a sheave pinextending through said hollow side-arm pins and through said sheaves.

9. In a bucket the combination of a bucket head, a plurality of bowlsections pivotally suspended from the bucket head, side arms on saidbowl sections, a sheave casing pivotally secured to said side-arms. saidcasing having longitudinally extending recesses therein, a plurality ofhollow side-arm pins proiecting through said side arms and into saidrecesses, a plurality of sheaves in said casing, and a sheave pinextending through said hollow side-arm pins and through said sheaves andmeans for retaining said sidearm pins in position.

10. In a bucket, the combination of a sup porting head, bowl sectionspivotally suspended from said head, a sheave casing pivotally supportedupon the bowl sections, closing line sheaves in said casing and in saidhead, a line reeved about said sheaves andadapted to close said bowlsections, and a rope guide for said line secured to said casingcomprising a trunk member, a plurality of arms projecting from saidtrunk member, and means connecting the free ends of said arms.

11. In a bucket, the combination of a supporting'head including a sheavecasing, bowl sections pivotally suspended from said head, a secondsheave casing pivotallysupported 'up'onthe bowl sections, sheaves 1nsaid re spective casings, a closing line extended aroundthe sheaves insaid casings, and rope guiding means for said line, comprising a trunkmember, a plurality of curved arms projecting from said trunk member anda removable connecting and closing member For the, free ends of saidarms.

12. In a bucket, the combination of a supporting head, bowl sectionspivotally suspended from said head, said head including a sheave casingadapted to take different pivotal positions, a second sheave casingconnected to the bowl sections and adapted totake different pivotalpositions, sheaves in the respective casings, a closing line passingaround the sheaves in the respective casings and adapted to close saidbowl sections, means on said casings for freely guiding the parts ofsaid line into said sheaves in the difi'erent pivotal positions assumedby said casings, said guiding means comprising a trunk member and aplurality of curved arms projecting from said trunk member, and meansfor securing said memher and said arms to the casing.

13. In a bucket, the combination with a supporting head of a pluralityof bowl sections, a sheave casing to which said sectionsare pivotallyconnected, connecting rods pivotally connected to the head and to saidbowl sections, sheaves in said casing, means pivotally connected to saidcasing and pivotally connected to a movable part of said bucket toretain" said casing in an approximately horizontal position as it isvertically moved to open and close the bucket and means limiting theopening movement of the bowl sections and the lowering movement of saidretaining means.

14:. In a bucket the combination with a plurality of bowl sections, asupporting head adapted to form upper and lower sheave compartments,connecting rods connected to said bowl sections, means for supportingsaid rods upon said head, a holding line sheave in the upper one of saidcompartments, a plurality of closing line sheaves in the lower one ofsaid compartments, side arms rigidly connected to said bowl sections, asheave casing pivotally mounted on said. side arms, a plurality ofclosing line sheaves in said casing, oscillating means connected to saidcasing and to another bucket element for retaining the casing in anapproximately horizontal position as said casing is vertically moved toopen and close the bowl sections and means for limiting the loweringmovement of said casing and of said oscillating means.

15. In a bucket the combination with a plurality of bowl sections, asupporting head adapted to form upper and lower sheave compartments,connecting rods connected to said bowl sections, means for pivotallysupporting said rods upon said head, a holding line sheave in the upperone of said compartments, a plurality of closing line sheaves in thelower one of said compartments side arms rigidly connected to saidbowlsections, a sheave casing pivotally mounted on said side arms, aplurality of closing line sheaves in said casing, and means pivotallyconnected to said casing and to an oscillating member for retaining saidcasing in an approximately horizontal position as said casing is movedto open and close the bowl sections.

16. In a bucket the combination with a. plurality ofbowl sections,asupporting head adapted to form upper and lower sheave compartments,connecting rods connected to said bowl sections, means for pivotallysupporting said rods upon said head, a holding line sheave in the upperone of said compartments, a plurality of closing line sheaves in thelower one of said compartments, side arms rigidly connected to said bowlsections, a sheave casing pivotally mounted on said side arms, aplurality of closingline sheaves in said casing, a control arm movablymounted upon said casing and movably mounted upon a movable member-tocontrol said casing in its vertical movements on the opening and closingof the bucket andmeans acting to limit the lowering of said casing, theopening of the bowl sections and the lowering travel said control arm17. In a bucket, the combination with a supporting head of a pluralityof bowl sections, a casing connected to said bowl'sections, supportingmeans pivotally connecting said head and said bowl sections, a powerdevice in said casing, and-means having operative connection with saidcasing and controlled by said supporting means for retaining said casingin an approximately horizontal position during its operating movements.

18. In a bucket, the combination of a supporting head, a plurality ofbowl sections, a sheave casing pivotally connected to said bowl sectionsoscillating members having operative connection with said head and withsaid bowl sections, sheaves in said casing, and means connected to saidcasing having operative connection with certain of said members andcontrolled thereby, for retaining said casing in proper horizontalposition as it is vertically moved to open and close the bowl sections.

19. In a bucket, the combination of a supporting head, a plurality ofbowl sections, a sheave casing connected to said bowl sections,connecting rods carried by said head,

and connected to said bowl sections, sheaves in said casing, and meansconnected to said casing and controlled by the movement of certain 01":said connecting rods, for retaining said casing in an approximatelyhorizontal position as it is vertically raised and lowered to close andopen the bowl sections.

20. In a bucket, the combination of a supporting head, a plurality ofbowl sections, a casing pivotally connected to said bowl sections,oscillating connecting rods carried by said head and connected to saidbowl sections, a power device in said casing, supporting means connectedto and movable with the oscillating movements of certain of saidconnecting rods, and a control member having operative connection withsaid casing and with said supporting means for retaining said casing inan approximately horizontal position as it is vertically moved tooperate the bowl sections.

21. In a bucket, the combination of a supporting head, a plurality ofbowl sections, a sheave casing connected to said bowl sections, pivotedsupporting means operatively connected to said head and to one of saidbowl sections and movable relatively to the latter, and a control memberhaving operative connection with and controlled by said pivoted meansand also having operative connection with said casing, for retainingsaid casing in an approximately horizontal position as it is verticallymoved to open and close the bowl sections.

22. In a bucket, the combination with a supporting head of a pluralityof bowl sections, a casing connected to said bowl sections, supportingmeans pivotally connecting said head and said bowl sections, windingmeans in said casing, and means connected to said casing and controlledby said supporting means for retaining said casing in an approximatelyhorizontal position during its operating movements.

23. In a bucket, the combination of a supporting head, a plurality ofbowl sections, a casing pivotally connected to said bowl sec-' tions,oscillating connecting rods carried by said head and connected to saidbowl sections, winding means in said casing, supporting means connectedto and movable with the oscillating movements of certain of saidconnecting rods, and a control member having connection with said casingand with said supporting means for retaining said casing in anapproximately horizontal position as it is vertically moved to operatethe bowl sections.

' 24. In a bucket the combination of a plurality of bowl sections,connecting rods pivotally connected to said bowl sections and a sheavecasing pivotally supporting said connecting rods comprising a pluralityof perpendicularly disposed castings rigidly secured together, saidcastings being provided on their inner surfaces with integral spacinglugs having arc-shaped surfaces adapted to form rope guards.

JOHN II. HAYWARD. HERBERT S. ATKINSON. Witnesses:

LAURA E. SMITH, JOHN M. BITTNER.

Uopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, I). C.

